Multi-frequency-band long-endurance seabed earthquake monitoring system and method

An earthquake monitoring and long-duration technology, applied in seismology, geophysical measurement, seismic signal transmission, etc., can solve the problems of drastic changes in the geological environment, average gas output, mining duration, and shortage, and achieve the effect of comprehensive collection

Inactive Publication Date: 2019-04-09
广州威拓电子科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] In 2017, my country achieved the first successful trial mining of combustible ice in the sea area, realizing a historic breakthrough in the development of natural gas hydrate in my country. However, from trial mining to commercial mining, it still faces the average gas output, the duration of mining, and the mining project is accompanied by drastic changes in the geological environment. A lot of research and experiment work is still needed to solve scientific, safety, and environmental problems.
my country is still in the stage of feasibility analysis and experimentation in terms of three-dimensional time-lapse seismic research, and the trial production of natural gas hydrate in my country lacks the support of this technology

Method used

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  • Multi-frequency-band long-endurance seabed earthquake monitoring system and method
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  • Multi-frequency-band long-endurance seabed earthquake monitoring system and method

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Effect test

Embodiment 1

[0026] A multi-band long-duration submarine seismic monitoring system, such as figure 1 As shown, it includes the sea bottom end, the sea bottom end includes a four-component geophone, a data recorder, a battery, an acoustic unit, a release mechanism, and a housing, the four-component geophone is connected with the data logger, and the acoustic The unit is connected to the data logger, the release mechanism is located at the bottom of the housing, and the battery powers the entire system. The shell is made of pressure-resistant glass and has a spherical shape. The working frequency band of the four-component detector is 2-20000Hz, the sound pressure sensitivity is -160dB±1.5dB, the directivity is omnidirectional, and the internal preamplifier has a magnification of 20 times. The preamplifier is a voltage type, and the power supply is The voltage is +12VDC, the current is ≤3mA, the dynamic range is ≥120dB, the sensitivity variation range is ≤1.5dB, and the pressure-resistant w...

Embodiment 2

[0030] A multi-band long-duration submarine seismic monitoring system, such as figure 1 and figure 2 As shown, it includes the sea bottom end, the sea bottom end includes a four-component geophone, a data recorder, a battery, an acoustic unit, a release mechanism, and a housing, the four-component geophone is connected with the data logger, and the acoustic The unit is connected to the data logger, the release mechanism is located at the bottom of the housing, and the battery powers the entire system. The shell is made of pressure-resistant glass and has a spherical shape. The working frequency band of the four-component detector is 2-20000Hz, the sound pressure sensitivity is -160dB±1.5dB, the directivity is omnidirectional, and the internal preamplifier has a magnification of 20 times. The preamplifier is a voltage type, and the power supply is The voltage is +12VDC, the current is ≤3mA, the dynamic range is ≥120dB, the sensitivity variation range is ≤1.5dB, and the press...

Embodiment 3

[0033] A multi-band long-duration submarine seismic monitoring method, consisting of image 3 As shown, a plurality of seabed terminals for receiving seabed seismic data are erected on the seabed, and the described seabed ends obtain the data of seabed seismic data through four-component geophones, and the data recorder records the data; the first data conversion module The data is converted into an optical signal, and the first data transfer module at the transfer end parses it into a non-optical signal and then transmits it to the cloud. After the cloud receives the seabed earthquake data, it receives an instruction for adjustment or recovery, and transmits the instruction to the transfer terminal, and the first data transmission module of the transfer terminal transmits the data to the seabed end, and the seabed end performs the four-component analysis according to the instruction. The operating parameters of the detector are adjusted. The sea bottom terminal corrects the ...

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Abstract

The invention relates to the field of seabed exploration, and provides a multi-frequency-band long-endurance seabed earthquake monitoring system and method, which is used for solving the data acquisition problem of seabed earthquakes. The multi-frequency-band long-endurance seabed earthquake monitoring system comprises a seabed end; the seabed end comprises a four-component detector, a data recorder, a battery, an acoustic unit, a release mechanism and a shell; the four-component detector is connected with the data recorder; the acoustic unit is connected with the data recorder; the release mechanism is located at the bottom of the shell; and the battery supplies energy to the whole system. The four-component detector can receive earthquake data more comprehensively, so that seabed earthquake data information can be comprehensively collected, and seabed oil-gas storage can be effectively known.

Description

technical field [0001] The invention relates to the field of seabed exploration, in particular to a multi-band long-duration seabed seismic monitoring system and method. Background technique [0002] In 2017, my country achieved the first successful test mining of combustible ice in the sea area, realizing a historic breakthrough in the development of natural gas hydrate in my country. However, from trial mining to commercial mining, it still faces the average gas output, the duration of mining, and the mining project is accompanied by drastic changes in the geological environment. A lot of research and experiment work is still needed to solve scientific, safety, and environmental problems. my country is still in the stage of feasibility analysis and experimentation in the field of three-dimensional time-lapse seismic research, and the trial production of natural gas hydrate in my country lacks the support of this technology. [0003] The process of monitoring the performanc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01V1/22
CPCG01V1/22G01V2210/1427
Inventor 董广彭光荣李吉王森梁其强
Owner 广州威拓电子科技有限公司
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